1889.] W. Doherty — Certain Lycseiiidte from Lower Tenasserivi. 419 



occur which may or may not be distinct from it Mr. de Niceville has 

 pointed out to me that on the forewing of the male of tlie allied A. anti- 

 imda there is a curious clouded disc, perhaps of the nature of a sex- 

 mark. This is sometimes just traceable in agelastus. 



8. ArHOPALA VIHARA, Fold. 



Mergui. I obtained several species of this very difficult group, ' 

 but not having access to authenticated specimens of the allied species aroa, 

 atosia, yeudava, etc., I am unable to identify them. 



9. Arhopala metamuta, Hew. 

 Mergui, Myitta. 



10. Akhopala davisonii, de Nice, MS. 



Mergui, Myitta, Tavoy. This species, which is quite distinct from 

 the preceding one, belongs to a most difficult group which can hardly, I 

 think, be understood without a careful stndy of the prehensors. A. daoi- 

 sonii is one of the commonest and most ubiquitous of Malayan insects 

 and is abundant in Borneo.. 



11. Aehopala duessa, n. sp., PI. XXIII, Fig. 6. 



Male above bright cerulean blue over fully half of the forewing, the 

 apex widely, the costa and outer margin moderately, and the veins 

 slenderly black. Hindwing with the cell and extreme base of the lower 

 median space ii-rorated with blue scales. Below light brown, the costal 

 and apical half of the forewing, including the upper half of the cell, and 

 all the hindwing, glossed with pale violet, the markings violet brown 

 with violet-whitish irides, only the basal ones annular. Foreiving with 

 three transverse spots in the cell, a double one in the basal part of the 

 lower median space, a very broad compact dark transverse discal band 

 unbroken from the costa to the submedian vein ; the apex with a whitish 

 patch. Hindwing with basal annular spots, an irregvilar one at the end 

 of the cell, outwardly acuminate, and a very irregular transverse discal 

 band of which the first and second spots are compactly united with the 

 terminal cell-spot, the other five small and separate, forming an irregular 

 chain ; an outer discal pale fascia forming a large violet-whitish mass 

 near the apex, the disc also clouded with whitish ; an obscure sub- 

 marginal line of pale violet lunules, the marginal line dark. No metallic 

 subanal markings. Forewing distinctly xmdulated outwavdlj^, hindwing 

 without tails, lobes or undulations. Expanse li inch. 



Two males, Myitta. 1 know no species closely resembling this. It 

 may be allied to hazalus, but has no tail or lobe. The distribution of the 

 blue on the upperside is very unusual. 



12. Arhopala pekissa, n. sp., PI. XXIII, Fig. II. 



Male, above rich uniform purple blue over fully half the forewing 

 and two-thirds of the hindwing. Forewing with the costal border and 



